Device for granulation and method for granulation of dry substances

The subject of the invention is a granulating device and a dry granulation process, particularly applicable in the pharmaceutical and food industries. Device for granulating dry substances, with a hermetic chamber structure with lateral powder hopper and a powder chute located below it, over the sieve provided with a top fan with internal air filters mounted in the cylindrical part of the fan, and a bottom fan mounted under the sieve, and with the heating jacket surrounding the chamber, is characterized by that in the chamber (1) at a certain height above the sieve (2), above the heating height of the jacket (4) the upper nozzles (3) directed to the sieve (2) are made 3 ') connected to at least one compressor (6, 6 ') of air and connected to at least one external tank (7, 7 ') with liquid, moreover, on the sieve (2) below the heating height of the jacket (4) there is a lower spray nozzle (5). The method of granulating dry substances, is characterized by that a raw material is poured into the chamber (1) continuously by means of a hopper (9), then with at least one top spray nozzle (3, 3 ') moisturizes the raw material, successively the fluidization process takes place, the raw material is heated and mixed by fans provided (10, 11) air, at the same time using at least one upper spray nozzle (3, 3 ') and preferably a spray solution of the lower nozzle (5) is sprayed with a binder solution or water or steam, simultaneously using fans (11, 10) you have overpressure in the chamber (1) and the raw material is dried, successively, using a chute (12), the granulated material is poured.